可疑

可 = 丁 + 口 : Karl Marx (k) is challenging his abilities (可) in the elevator's living room (e3). He tries to force a nail (丁) into a mandarin (口), just by using his head. On top of that he tries to do so one thousand times, in order to create a bed of nails (mnemonic symbol for 可).

可 = 丁 + 口 : Alternative mnemonic symbol: kebab, from the pronunciation "ke". Karl Marx (k) is preparing a kebab (mnemonic symbol for 可) in the elevator's living room (e3). He also skewers mandarins (口) on the long steel nails (丁) and will only allow (可) his guests to eat the rest of the kebab if they eat their mandarins first.

疑 = 匕 + 又 + 疋 + 矢 : (Ø2)Maud Younger (y) found a hole in her hat and is furious. Just inside the space station's entrance (Ø2) she lines up her suspects (疑). First she suspects a ladle (匕), but it is not sharp enough. Then she inspects a boxing glove (又), but it is too large for the hole. Next she inspects a gumboot (疋), but it is not strong enough to make a hole. Finally she finds a dart (矢) and knows already: this is her suspect (疑) which caused the hole.